Cord lock



FIG. 1 is a top, front, and left side perspective view of a cord lock showing my new design, the fragmentary broken-line disclosure of a cord being for illustrative purposes only and forming no part of the claimed design;

FIG. 2 is a front elevational view thereof, the opposite side being identical;

FIG. 3 is a left end elevational view the opposite side being identical;

FIG. 4 is top plan view thereof; and,

FIG. 5 is a bottom plan view thereof. 

The ornamental design for a cord lock, as shown and described. 